Grimm S04E21 - Headache

Episode Overview

As Nick and Hank delve into a brutal murder case, they inch closer to identifying the serial killer, but Wu finds himself in serious peril. After rejecting Monroe and Rosalee's proposal, Juliette forges a new alliance to pursue her quest for vengeance. Meanwhile, Trubel unexpectedly reappears in Portland, adding another layer of intrigue to the unfolding events.

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